cpu.h revision 66937
1/* $FreeBSD: head/sys/ia64/include/cpu.h 66937 2000-10-10 14:57:10Z dfr $ */ 2/* From: NetBSD: cpu.h,v 1.18 1997/09/23 23:17:49 mjacob Exp */ 3 4/* 5 * Copyright (c) 1988 University of Utah. 6 * Copyright (c) 1982, 1990, 1993 7 * The Regents of the University of California. All rights reserved. 8 * 9 * This code is derived from software contributed to Berkeley by 10 * the Systems Programming Group of the University of Utah Computer 11 * Science Department. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 3. All advertising materials mentioning features or use of this software 22 * must display the following acknowledgement: 23 * This product includes software developed by the University of 24 * California, Berkeley and its contributors. 25 * 4. Neither the name of the University nor the names of its contributors 26 * may be used to endorse or promote products derived from this software 27 * without specific prior written permission. 28 * 29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 39 * SUCH DAMAGE. 40 * 41 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 42 * 43 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 44 */ 45 46#ifndef _MACHINE_CPU_H_ 47#define _MACHINE_CPU_H_ 48 49/* 50 * Exported definitions unique to Alpha cpu support. 51 */ 52 53#include <machine/frame.h> 54 55/* 56 * Arguments to hardclock and gatherstats encapsulate the previous 57 * machine state in an opaque clockframe. One the Alpha, we use 58 * what we push on an interrupt (a trapframe). 59 */ 60struct clockframe { 61 struct trapframe cf_tf; 62}; 63#define CLKF_USERMODE(framep) \ 64 (((framep)->cf_tf.tf_cr_ipsr & IA64_PSR_CPL) == IA64_PSR_CPL_USER) 65#define CLKF_BASEPRI(framep) \ 66 (((framep)->cf_tf.tf_cr_ipsr & IA64_PSR_I) == 0) 67#define CLKF_PC(framep) ((framep)->cf_tf.tf_cr_iip) 68#define CLKF_INTR(framep) (PCPU_GET(intr_nesting_level) >= 2) 69 70/* 71 * Preempt the current process if in interrupt from user mode, 72 * or after the current trap/syscall if in system mode. 73 */ 74#define need_resched() do { want_resched = 1; aston(); } while (0) 75 76#define resched_wanted() want_resched 77 78/* 79 * Give a profiling tick to the current process when the user profiling 80 * buffer pages are invalid. On the hp300, request an ast to send us 81 * through trap, marking the proc as needing a profiling tick. 82 */ 83#define need_proftick(p) \ 84 do { (p)->p_flag |= P_OWEUPC; aston(); } while (0) 85 86/* 87 * Notify the current process (p) that it has a signal pending, 88 * process as soon as possible. 89 */ 90#define signotify(p) aston() 91 92#define aston() PCPU_SET(astpending, 1) 93 94#ifdef _KERNEL 95extern u_int32_t want_resched; /* resched() was called */ 96#endif 97 98 99/* 100 * CTL_MACHDEP definitions. 101 */ 102#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 103#define CPU_ROOT_DEVICE 2 /* string: root device name */ 104#define CPU_UNALIGNED_PRINT 3 /* int: print unaligned accesses */ 105#define CPU_UNALIGNED_FIX 4 /* int: fix unaligned accesses */ 106#define CPU_UNALIGNED_SIGBUS 5 /* int: SIGBUS unaligned accesses */ 107#define CPU_BOOTED_KERNEL 6 /* string: booted kernel name */ 108#define CPU_ADJKERNTZ 7 /* int: timezone offset (seconds) */ 109#define CPU_DISRTCSET 8 /* int: disable resettodr() call */ 110#define CPU_WALLCLOCK 9 /* int: indicates wall CMOS clock */ 111#define CPU_MAXID 9 /* 9 valid machdep IDs */ 112 113#define CTL_MACHDEP_NAMES { \ 114 { 0, 0 }, \ 115 { "console_device", CTLTYPE_STRUCT }, \ 116 { "root_device", CTLTYPE_STRING }, \ 117 { "unaligned_print", CTLTYPE_INT }, \ 118 { "unaligned_fix", CTLTYPE_INT }, \ 119 { "unaligned_sigbus", CTLTYPE_INT }, \ 120 { "booted_kernel", CTLTYPE_STRING }, \ 121 { "adjkerntz", CTLTYPE_INT }, \ 122 { "disable_rtc_set", CTLTYPE_INT }, \ 123 { "wall_cmos_clock", CTLTYPE_INT }, \ 124} 125 126#ifdef _KERNEL 127 128struct pcb; 129struct proc; 130struct reg; 131struct rpb; 132struct trapframe; 133 134extern struct proc *fpcurproc; 135extern struct rpb *hwrpb; 136extern volatile int mc_expected, mc_received; 137 138void ast __P((struct trapframe *)); 139int badaddr __P((void *, size_t)); 140int badaddr_read __P((void *, size_t, void *)); 141void child_return __P((struct proc *p)); 142u_int64_t console_restart __P((u_int64_t, u_int64_t, u_int64_t)); 143void do_sir __P((void)); 144void dumpconf __P((void)); 145void exception_return __P((void)); /* MAGIC */ 146void frametoreg __P((struct trapframe *, struct reg *)); 147long fswintrberr __P((void)); /* MAGIC */ 148int ia64_pa_access __P((u_long)); 149void ia64_init __P((void)); 150void ia64_fpstate_check __P((struct proc *p)); 151void ia64_fpstate_save __P((struct proc *p, int write)); 152void ia64_fpstate_drop __P((struct proc *p)); 153void ia64_fpstate_switch __P((struct proc *p)); 154void init_prom_interface __P((struct rpb*)); 155void interrupt 156 __P((unsigned long, unsigned long, unsigned long, struct trapframe *)); 157void machine_check 158 __P((unsigned long, struct trapframe *, unsigned long, unsigned long)); 159u_int64_t hwrpb_checksum __P((void)); 160void hwrpb_restart_setup __P((void)); 161void regdump __P((struct trapframe *)); 162void regtoframe __P((struct reg *, struct trapframe *)); 163int savectx __P((struct pcb *)); 164void restorectx __P((struct pcb *)); 165void set_iointr __P((void (*)(void *, unsigned long))); 166void switch_exit __P((struct proc *)); /* MAGIC */ 167void switch_trampoline __P((void)); /* MAGIC */ 168void syscall __P((u_int64_t, struct trapframe *)); 169void trap __P((int vector, struct trapframe *framep)); 170 171#endif /* _KERNEL */ 172 173#endif /* _MACHINE_CPU_H_ */ 174